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Hpi type RCDS

RCD performance data

For special applications

Hpi type RCDs have additional immunity to false tripping which is much higher than the level required by the standard and detect residual currents with AC and DC components (A type). They operate at temperatures of -25°C to + 40°C and are used in the following special cases:
- When loss of data would be detrimental: such as computer equipment power supply lines (banks, military instrumentation, airline reservation centre, etc)
- When loss of operation would be detrimental (automated machines, medical instrumentation, freezer line, etc)
- Places where there is a high risk of lightning strike
- Sites subject to considerable interference (use of fluorescent lights, etc)
- Sites with very long lines